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Finding the Fourth Proportional to 355,501.85, 533,144.32 and 186,930.72

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Solution

The fourth proportional to 355,501.85, 533,144.32 and 186,930.72 is: 280,339.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,501.85 : 533,144.32 = 186,930.72 : x
  2. Step 2: Convert to fraction form
    355,501.85/533,144.32 = 186,930.72/x
  3. Step 3: Cross multiply
    355,501.85x = 533,144.32 × 186,930.72
  4. Step 4: Simplify right side
    355,501.85x = 99,661,051,134.18
  5. Step 5: Solve for x
    x = 99,661,051,134.18/355,501.85
  6. Step 6: Final answer
    x = 280,339.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.